reasoning

/ˈrizənɪŋ/
noun
  1. The process of thinking about something in a logical way in order to form a conclusion or judgment.
    • Her reasoning for quitting the job was that she wanted more time with her family.
    • The detective's reasoning led him to the correct suspect.
    • Using careful reasoning, the student solved the math problem step by step.
Antonyms
verb
  1. Present participle of reason: to think about something in a logical way in order to form a conclusion or judgment.
    • The committee is reasoning about how to spend the budget.
    • She was reasoning with her little brother to share the toy.
    • He is reasoning through the problem right now.